<div class="title_right">
    <div class="col-md-5 col-sm-5 col-xs-12 form-group pull-right top_search">
        <form method="post" action="{% url 'search'  group.id  %}">
            {% csrf_token %}
            <div class="input-group">
                <input type="text" name="search_info" class="form-control" placeholder="请输入您要搜索的信息">
                <span class="input-group-btn">
                  <button class="btn btn-default" type="submit">搜索</button>
                </span>
            </div>
        </form>
    </div>
</div>